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- r0: run_1_thread
- r1: run_2_threads
- r2: run_4_threads
- r3: run_8_threads
- r4: run_16_threads
- r5: run_32_threads
- r6: run_48_threads
- r7: run_64_threads
Metric | r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
---|
Total Time (s) | 152.32 | 81.07 | 45.15 | 27.08 | 18.14 | 13.66 | 12.18 | 11.44 |
Max (Thread Active Time) (s) | 151.97 | 80.80 | 44.97 | 26.99 | 18.08 | 13.61 | 12.09 | 11.36 |
Average Active Time (s) | 151.97 | 75.86 | 38.17 | 19.00 | 9.50 | 4.79 | 3.20 | 2.40 |
Activity Ratio (%) | 99.8 | 93.6 | 84.5 | 70.2 | 52.4 | 35.1 | 26.3 | 21.0 |
Average number of active threads | 0.998 | 1.872 | 3.381 | 5.614 | 8.383 | 11.210 | 12.598 | 13.454 |
Affinity Stability (%) | 100.0 | 99.7 | 99.3 | 98.7 | 97.9 | 97.1 | 96.7 | 96.5 |
GFLOPS | 5.778 | 10.323 | 19.208 | 31.165 | 44.460 | 60.574 | 67.458 | 72.523 |
Time in analyzed loops (%) | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.7 |
Time in analyzed innermost loops (%) | 74.3 | 74.9 | 74.7 | 74.3 | 74.4 | 74.2 | 74.8 | 74.8 |
Time in user code (%) | 100 | 100.0 | 100.0 | 100.0 | 100.0 | 99.9 | 99.8 | 99.7 |
Compilation Options Score (%) | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 | 87.5 |
Array Access Efficiency (%) | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 | 25.0 |
|
Potential Speedups |  |
Perfect Flow Complexity | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
Perfect OpenMP/MPI/Pthread/TBB + Perfect Load Distribution | 1.00 | 1.07 | 1.18 | 1.42 | 1.90 | 2.85 | 3.79 | 4.74 |
Scalability - Gap | 1.00 | 1.06 | 1.19 | 1.42 | 1.91 | 2.87 | 3.84 | 4.81 |
No Scalar Integer | Potential Speedup | 1.19 | 1.19 | 1.19 | 1.19 | 1.19 | 1.19 | 1.19 | 1.18 |
Nb Loops to get 80% | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
FP Vectorised | Potential Speedup | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 | 1.63 | 1.62 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Fully Vectorised | Potential Speedup | 4.65 | 4.65 | 4.65 | 4.65 | 4.65 | 4.63 | 4.62 | 4.61 |
Nb Loops to get 80% | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
Only FP Arithmetic | Potential Speedup | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 | 1.21 |
Nb Loops to get 80% | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
Source Object | Issue |
▼kmeans-gcc-O3-all-soa– | |
▼main_soa.cpp– | |
○ | -O3 or -Ofast is missing. |
| r0 | r1 | r2 | r3 | r4 | r5 | r6 | r7 |
Experiment Name | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 | K-Means scalability gcc-O3-all-soa 100000000 |
Application | ./kmeans/kmeans-gcc-O3-all-soa | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Timestamp | 2025-07-07 11:00:45 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Experiment Type | Sequential | OpenMP; | same as r1 | same as r1 | same as r1 | same as r1 | same as r1 | same as r1 |
Machine | ip-172-31-18-66 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture | ARM_NEOVERSE_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Model Name | | | | | | | | |
Cache Size | | | | | | | | |
Number of Cores | | | | | | | | |
Maximal Frequency | 0 GHz | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
OS Version | Linux 6.8.0-1030-aws #32-Ubuntu SMP Wed May 28 19:33:40 UTC 2025 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Architecture used during static analysis | aarch64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Micro Architecture used during static analysis | ARM_NEOVERSE_V1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Compilation Options |
kmeans-gcc-O3-all-soa: GNU C++14 14.2.0 -mlittle-endian -mabi=lp64 -mcpu=neoverse-v1+sm4+crc+aes+sha3 -g -O3 -std=c++14 -fno-omit-frame-pointer -fopenmp -ftree-vectorize -funroll-loops -ffast-math GNU C17 14.2.0 -mlittle-endian -mabi=lp64 -g -g -g -O2 -O2 -O2 -fbuilding-libgcc -fno-stack-protector -fPIC | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of processes observed | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of threads observed | 1 | 2 | 4 | 8 | 16 | 32 | 48 | 64 |
Frequency Driver | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Frequency Governor | NA | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Huge Pages | madvise | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Hyperthreading | off | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of sockets | 1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Number of cores per socket | 64 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO version | 2025.1.1 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
MAQAO build | d6222087d529d549c11e227a1cd513200c205d3a::20250704-175912 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |
Comments | AWS Graviton 3 (Neoverse V1) CPU, 1-64 threads runs | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 | same as r0 |